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Grade WP317
USA UNS S31700
AISI
American Iron and Steel Institute		 317
Corresponding Standard ASTM A403/A403M-2022
Wrought Austenitic Stainless Steel Piping Fittings
Classification Austenitic Stainless Steel
WP317 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo
Minimum Value - - - - - 18 11 3
Maximum Value 0.08 1 2 0.045 0.03 20 15 4
WP317 Mechanical Properties
condition Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
%
Pipe Fittings ≥515 ≥205 Standard round sample, or small sample, or strip sample
L0=4D
long: ≥28
tr: ≥20
1 Approximate Comparison Table Austenitic Stainless Steel
China Taiwan, China Japan South Korea United States Germany United Kingdom
GB ISC CNS JIS KS ASTM UNS DIN EN/DIN W-Nr. BS EN/BS
06Cr19Ni13Mo3 S31708 317 SUS 317 STS 317 317 S31700 X5CrNiMo 17-13 1.4449 317S16
2 Approximate Comparison Table Austenitic Heat-Resistant Steel
China Taiwan, China Japan South Korea United States Germany United Kingdom
GB ISC CNS JIS KS ASTM UNS DIN EN/DIN W-Nr. BS EN/BS
06Cr19Ni13Mo3
(0Cr19Ni13Mo3) 		S31708 317 SUS 317 STS 317 317 S31700 X5CrNiMo 17-13 1.4449 317S16
3 Approximate Comparison Table Austenitic Stainless Steel
China Japan United States International Organization for Standardization European Standard
ISC JIS UNS ISO Numerical Grade Numerical Grade
S31708 SUS317 S31700 X6CrNiMo19-13-4 4445-317-00-U (1.4445)

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